1S6421 NUT Caterpillar parts
245, 245B, 245D, 594, 594H, D9E, D9G, D9H
Rating:
Alternative (cross code) number:
CA1S6421
1S-6421
1S6421
CA1S6421
1S-6421
1S6421
Weight: 0.39 pounds 0 kg.
Information:
HEIGHT
25.4
mm
MATERIAL
Steel -600 Mpa Tensile strength min
STYLE
SQUARE
THREAD SIZE
1.00-14
WASHER FACE DIAMETER
36
mm
ACROSS FLATS
38.1
EXCAVATOR, TRACK-TYPE TRACTOR,
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CTP 1S6421 Track Nut, 1"-14 UNF Thread Size
CTP 1"-14 UNF Thread Size || Track Type of Nut || Sold in each
CTP 1"-14 UNF Thread Size || Track Type of Nut || Sold in each
CTP 1S6421 Track Nut, 1"-14 UNF Thread Size
CTP 1"-14 UNF Thread Size || Track Type of Nut || Sold in each
CTP 1"-14 UNF Thread Size || Track Type of Nut || Sold in each
Number on catalog scheme:
None
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Compatible equipment models: 1S6421:
Information:
Probable Causes
Loose rocker arm adjustment screw locknut
Insufficient lubrication
Worn rocker arm
Worn push rods
Worn valve lifters or broken valve lifters
Worn camshaft
Worn valve stem
Incorrect valve lashRecommended Repairs
Loose Rocker Arm Adjustment Screw Locknut
Check for proper installation of the rocker arm adjustment screw locknut. If the rocker arm adjustment screw locknut is loose, adjust the valve lash. Refer to Testing and Adjusting, "Air Inlet And Exhaust System".Insufficient Lubrication
Check the lubrication in the valve compartment. There must be a strong flow of oil at high engine rpm. There should only be a small flow of oil at low engine rpm. Oil passages must be clean. Pay particular attention to the oil passages that carry oil to the cylinder head. Check for sufficient lubrication between the injector tappet and the rocker arm buttons.Worn Rocker Arm
Check the rocker arms for signs of wear. If there is too much wear, install new parts or rocker arms.Worn Push Rods
Inspect the push rods for signs of wear. If there is too much wear, install new push rods. Adjust the valve lash. Refer to Testing and Adjusting, "Air Inlet And Exhaust System".Worn Valve Lifters or Broken Valve Lifters
Clean the valve train. Install new valve lifters.Worn Camshaft
Check the camshaft for wear. Adjust the valve lash. Refer to Testing and Adjusting, "Air Inlet And Exhaust System". Refer to Specifications for wear limit dimensions.Worn Valve Stem
Check the valve stems for signs of wear. Check for free movement of the valves or bent valve stems. Refer to Specifications for wear limit dimensions.Incorrect Valve Setting
Check the valve lash. Adjust the valve lash, if necessary. Refer to Testing and Adjusting, "Air Inlet And Exhaust System".
Loose rocker arm adjustment screw locknut
Insufficient lubrication
Worn rocker arm
Worn push rods
Worn valve lifters or broken valve lifters
Worn camshaft
Worn valve stem
Incorrect valve lashRecommended Repairs
Loose Rocker Arm Adjustment Screw Locknut
Check for proper installation of the rocker arm adjustment screw locknut. If the rocker arm adjustment screw locknut is loose, adjust the valve lash. Refer to Testing and Adjusting, "Air Inlet And Exhaust System".Insufficient Lubrication
Check the lubrication in the valve compartment. There must be a strong flow of oil at high engine rpm. There should only be a small flow of oil at low engine rpm. Oil passages must be clean. Pay particular attention to the oil passages that carry oil to the cylinder head. Check for sufficient lubrication between the injector tappet and the rocker arm buttons.Worn Rocker Arm
Check the rocker arms for signs of wear. If there is too much wear, install new parts or rocker arms.Worn Push Rods
Inspect the push rods for signs of wear. If there is too much wear, install new push rods. Adjust the valve lash. Refer to Testing and Adjusting, "Air Inlet And Exhaust System".Worn Valve Lifters or Broken Valve Lifters
Clean the valve train. Install new valve lifters.Worn Camshaft
Check the camshaft for wear. Adjust the valve lash. Refer to Testing and Adjusting, "Air Inlet And Exhaust System". Refer to Specifications for wear limit dimensions.Worn Valve Stem
Check the valve stems for signs of wear. Check for free movement of the valves or bent valve stems. Refer to Specifications for wear limit dimensions.Incorrect Valve Setting
Check the valve lash. Adjust the valve lash, if necessary. Refer to Testing and Adjusting, "Air Inlet And Exhaust System".
Cat SIS web machinery list:
Parts nut Caterpillar catalog:
57, 58, 594H, 977K, 977L, D6C, D6D, D6E, D6E SR, D6G2 XL, D7G, D7H, D9L, D9N
120B, 12E, 12F, 130G, 140B, 14E, 25, 528, 572G, 572R, 572R II, 594, 594H, 621, 623, 630B, 631C, 633C, 637D, 651, 657, 768B, 768C, 769, 772, 773, 824B, 834, 988
120, 120B, 120G, 12E, 12G, 130G, 140, 140B, 14E, 14G, 4S, 561B, 561C, 561D, 571G, 5S, 621, 621B, 621R, 623, 627B, 631C, 633C, 637, 641, 641B, 651, 657, 657B, 6A, 6S, 7A, 8A, 9A, D4D, D4E, D5, D6C, D7F...
120, 120B, 12E, 140, 140B, 14G, 14H, 14H NA, 16G, 16H, 16H NA, 24, 25, 571G, D9E, D9H
571G, 572G, 583K, 594, 594H, 983, D7F, D7G, D8H, D8K, D9G, D9H
7A, 7S, 8 SR, 824S, 826C, 834B, 836, 8A, 8S, 8U, 9A, D10, D7G, D7G2, D7H, D7R, D7R II, D8H, D8K, D8N, D9E, D9G, D9L
3P, 3S, 571G, 583H, 583K, 594, 594H, 613, 621, 623B, 630B, 631D, 633D, 651, 666, 977
594, 594H, D9G, D9H
594, 594H, D9E, D9G, D9H
583H, 594, 955C, D8H, D9E, D9G
120, 120B, 12E, 12F, 12G, 140, 140B, 140G, 14E, 16, 16G, 571G, 572G, 583H, 583K, 594, 594H, 621, 621B, 623B, 627, 627B, 633, 824, 824B, 825C, 825G, 825G II, 825H, 988, AP-1000B, AP-600D, AP-800C, AP-8...
571G, 572G, 583H, 583K, 983, 983B, D7F, D7G, D7G2, D8H, D8K, D9E
235D, 245, 345C
8M4242
NUT
955H, D320A
955H, D320A
7L4565
NUT
G342C
G342C
4L2495
NUT
D343
D343
5F7225
NUT
D398
D398
9M1256
NUT
12E, 16, 561B, 621, 641, 651, 666, 824, 834, 955H, 977H, 980, 988, D342C, D4D, D8H, D9G
12E, 16, 561B, 621, 641, 651, 666, 824, 834, 955H, 977H, 980, 988, D342C, D4D, D8H, D9G
305.5, 306, 307, 307B, 307C, 307D, 308C, 308D, 311, 311B, 311C, 312, 312B L, 312C, 312C L, 312D, 313B, 314C, 314D CR, 314D LCR, 315, 315B, 315B L, 315C, 315D L, 317, 317B LN, 318B, 318C, 319C, 319D, 3...
307, 311, 312, 315, 317, 320B, 322B LN, 325, 325 L, 325 LN, 325B L, 330, 330 FM L, 330B L, 350, 375, 375 L, 5080, 5130, 5230, E110, E120, E140, E180, E240, E300, E450, E650, E70, EL240B, R1300, R1300G...
307, 307B, PM-465
8S1860
NUT-TRACK
215B
215B
1090, 1190, 1190T, 1390, 215C, 219D, 225, 225D, 227, 229, 229D, 231D, 235, 235B, 2390, 2391, 320C FM, 320D, 320D FM, 320D FM RR, 322C, 324D FM, 325C FM, 325C L, 325D FM, 325D FM LL, 517, 521, 522, 527...
205B, 211B, 215, 215B, 215C, 215D, 225, 229, 312B L, 312C, 323D LN, 561B, 561C, 561H, 561M, 561N, 939, 939C, 941, 943, 951B, 953, 953B, 953C, 953D, 955C, 955H, 955K, 955L, 977D, 988, D4D, D4E, D4E SR,...